C061ABrake Pedal Position Sensor B Offset Exceeded Learning Limit
- Generic OBD-II code · Chassis
- Needs a drive cycle to confirm a fix
- How the car detects it
- C061A is the same learn-limit check for the second channel, B. Many pedal sensors hold two independent elements; on GM trucks since 2012 one potentiometer feeds the ECM and the other the BCM, each with its own 5 V reference, ground and signal. Each controller keeps its own released-position value and updates it whenever it sees a lower voltage, so a short dropout on one channel can leave B with a skewed zero while A stays correct. The Hitachi patent rejects a learned zero outside its prescribed range as a sensor fault. Snap-on and GM's 16-NA-155 stress relearning in both modules without touching the pedal. Which physical channel a maker calls B is not public, and no maker documents C061A; channel A is C0619.
- What you may notice
- Brake system warning or message
- Mismatch between modules about pedal state, e.g. brake lights versus cruise control
- Shift interlock or start function may act up
- Likely causes
- LikelyDropout or fretting corrosion on the channel B reference, ground or signal pin
- PossibleLearn done in only one module, or the pedal moved during the learn
- PossiblePedal rest position changed by a mat, bracket damage or adjustment
- RareDrifting second element inside the pedal sensor
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.